Radeon HD 7770 and Radeon Sky 700 - video card comparison

Radeon HD 7770

Radeon Sky 700

Architecture

GCN (2011−2017)

GCN 1.0 (2012−2020)

GPU code name

Cape Verde

Tahiti

Market segment

Desktop

Desktop

Release date

February 2012

March 2013

Bus support

-

PCIe 3.0

Interface

PCIe 3.0 x16

PCIe 3.0 x16

Supplementary power connectors

1x 6-pin

1x 8-pin

Core clock speed

1000 MHz

900 MHz

Floating-point performance

-

3,226 gflops

Manufacturing process technology

28 nm

28 nm

Number of transistors

1,500 million

4,313 million

Pipelines / CUDA cores

640

1792

Power consumption (TDP)

80 Watt

225 Watt

Texture fill rate

40.00

100.8

Memory type

GDDR5

GDDR5

Maximum RAM amount

2 GB

6 GB

Memory bus width

128 Bit

384 Bit

Memory clock speed

4500 MHz

5500 MHz

Memory bandwidth

72 GB/s

176 GB/s

Shared memory

-

-

Display Connectors

1x DVI, 1x HDMI, 2x mini-DisplayPort

1x DisplayPort

Eyefinity

+

-

DisplayPort count

-

1

Dual-link DVI support

-

1

HDMI

+

-

DirectX

12 (11_1)

12 (11_1)

OpenCL

1.2

1.2

OpenGL

4.6

4.6

Shader Model

5.1

5.1

Vulkan

1.2.131

1.2.131